Improvement in cocks for drawing beer



l, MOFFET.

Cocks forv Drawing Beer.

N"o". 142,860. Patented September 16, 1873.

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Witnesses: lnvemur:

v Attorneys.

UNITED STATES PATENT OFFICE.

JOHN MOFFET, OF NEW YORK, N. Y.

IMPROVEMENT IN COCKS FOR DRAWING BEER.

Specification forming part of Letters Patent No. 142,860, datedSeptember 16,1873; application filed July 5, 1873.

riod of time, and where it is important to prevent the escape of thegases.

The invention will first be fully described, and then clearly pointedout in the claim.

Figure l is a longitudinal sectional elevation of a barrel with myimproved cock. Fig. 2 is a top view of a section of the barrel. Fig.

3 is a horizontal section of Fig. l on the line a m. Fig. 4. is asection on the line 3 y, and

Fig. 5 is partly a side elevation and partly a sectional elevation ofthe key used for turning the'cocks.

A is the head of the barrel, and B the drawing-cock. This cock is fittedinto the head from the inside, and the plug 0 is fitted in the insideextension. The outside extension is shorter than the chine of thebarrel, so that it is not subject to injury, and does not require to betaken out when the barrel is empty, but it may be, if desired. D is theventilatingcock. It is fitted in the side E of the barrel directly overthe drawing-cock, with its plug F also inside of the barrel. G is avent-passage through the cock, and H a correspond ing passage throughthe plug. I is an extension of the plug out through the cock, for theapplication of a wrench, J, for turning the plugs. K is a rod connectingthe two plugs, for turning one by the other. Said rod is capable of aslight endwise motion in the plug 0, and a spring, L, is arranged withit and said plug to keep both plugs tight on their seats.

It will be seen that by turning the plugs one way to open cockB theventilating-passages G H will be brought into line, so as to admit theair; but by turning them the other way these passages will remain closedwhile the drawing-cock is opened, so that the ventilating-passages maybe opened or not, at will.

The full barrels of beer generally contain more or less gas, which willfor a time escape, and carry with it some of the beer and foam if theventilating-passages are open; but when the beer is partly drawn, andthe pressure of the gas destroyed by its expansion, it becomes necessaryto admit the air; therefore, I have contrived this arrangement, which,it will be seen, is alike applicable to both functions with out changeor adjustment.

It is quite necessary to use ventilating-cocks of some kind,particularly for beer, for, if exposed to the air as much as itnecessarily is by the common practice of opening the bung to facilitatethe drawing, it becomes fiat and insipid to the taste very soon; henceit is important to obtain the simplest and most efficient means ofventilating sufficiently for drawing, and only while drawing.

Having thus described my invention, I

claim as new and desire to secure by Letters Patent-- The combination,with cocks and valve-plu gs B O and D F, of an intermediate rod, K,having play in one of the plugs O, and provided with a spring, L, thattends to raise the said rod out of said plug, thereby holding bothvalve-plugs securely in their seats.

JOHN MOFFET.

Witnesses:

A. P. THAYER, T. B. MosHEn.

